Collins doesn't last long NBC is already planning to replace him and restore the original format as The Tonight Show.

June – On Tonight! America After Dark, Jack Lescoulie is unsuccessful, so NBC hires Al 'Jazzbo' Collins as master of ceremonies.

May 29 – In Hong Kong, Rediffusion Television, a predecessor of ATV Home and RTHK TV 31, begins broadcasting as a bilingual subscription cable service, becoming the first television station in a Crown colony of the British Empire as well as the first station in a predominantly Chinese city.

This will be broadcast with the same presenter until his death in December 2012.

April 24 – First broadcast of BBC Television astronomy series The Sky at Night in the United Kingdom presented by Patrick Moore.

Its May 6 broadcast marks the end of an era in early television comedy.

April 4 – Desilu films 'The Ricardos Dedicate a Statue', the 180th and final first run episode of I Love Lucy.

WYES will swap channels with WVUE in 1970.

In the United States WYES begins broadcasting on channel 8 in New Orleans.

In Britain, the BBC's Panorama current affairs television programme presented by Richard Dimbleby broadcasts a spaghetti tree hoax report purporting to show spaghetti being harvested in Switzerland, believed to be the first April Fool's Day joke televised.

March 31 – The first TV version of Cinderella, starring 21-year-old Julie Andrews, and with songs by Richard Rodgers and Oscar Hammerstein II, is broadcast in color by CBS.

March 7 – Portugal begins the Rádio e Televisão de Portugal television service after several months of experimentation.

It has been a major obstacle to the success of ITV.

February 16 – In the United Kingdom, the ' Toddlers' Truce' (an arrangement whereby there have been no TV broadcasts between 6 PM and 7 PM, to allow parents to put their children to bed) is abolished.

He is replaced by Jack Lescoulie and the show is changed from a talk/variety show format to be more like the series Today, with the title Tonight! America After Dark.

January 25 – Steve Allen makes his final appearance as host of NBC's The Tonight Show.

January 6 – Elvis Presley makes his final appearance on The Ed Sullivan Show.

Below is a list of television-related events during 1957. The year 1957 in television involved some significant events.

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